Chapter 5. Port Operating Modes
57
Once the connection is established, the host receives data from the serial
device. From this point on, data can be transmitted between the host and the
device in both directions.128-bit/256-bit SSL (TLS v1.0 / TLS v1.1 / TLS v1.2)
data encryption is supported in this operating mode.
The Serial Console Server supports simultaneous connections from up to 16
host computers in this mode, allowing multiple computers to communicate
with the serial device at the same time.
For information about configuring
TCP Server
settings, see page 76.
Note:
Be sure that the
Socket
entry specified on the
Network
page corresponds
to the port that the device listens on. 5301 is the Serial Console Server’s
default setting. (see
Network
, page 101, and
Base Socket
, page 102).
TCP Client
In
TCP Client
mode, when serial data comes into the Serial Console Server’s
serial port, the Serial Console Server initiates contact with the host computer
and begins sending serial data to the to the host. The Serial Console Server can
send data to up to 16 host computers simultaneously, and supports 128-bit/256-
bit SSL (TLS v1.0 / TLS v1.1 / TLS v1.2) data encryption in this operating
mode.
For information about configuring
TCP Client
settings, see page 76.
UDP Mode
UDP
(User Datagram Protocol)
Mode
is faster and more efficient at
communications than TCP. In UDP mode, communications are bilateral. A
serial device can send data to, and receive data from, up to 16 host computers
via the Serial Console Server’s COM port.
Because it doesn’t perform error checking in the thorough way that TCP does,
UDP is more suitable for real time applications (such as message display) than
the slower TCP which is optimized for data accuracy.
For information about configuring
UDP Mode
settings, see page 78.
Virtual Modem
In
Virtual Modem
mode, the Serial Console Server’s COM port emulates a
modem. The port acts as if it were a real modem for communication with a
remote server. This allows software designed to transmit data over a serial
modem-to-modem link, to perform serial operations over a TCP/IP Ethernet
connection. In this mode, the Serial Console Server “dials into” the remote
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